Pressure line control



Aug. 30, 1932. R. s. WOOD PRESSURE LINE CONTROL Filed Sept. 3, 1929 INVENTOR. I 3 7 W Patented Aug. 30, 1932 Renee's. weonjon nynotrcrnymcnrem H 3311533311 uncommon a pncafioameasqaembei s; 1929.: sen-ar mi see,ow;

. My invention relatesto a new: anduseful improvement. in- "a pressure -line control adapted for mounting in. pressure lines for delivering of liquids and gases: and partied:-

lar'l y adapted forlinstallation'in steam-lines, water lines, etc. 1 I r a It is an object ofthepresent invention to provide a pressure line' control which will serve to shut off the flowof materia'l through 0 the pressure :line dependent upon operation of the actuating mechanismhwhich'may rbe positioned-in any desirableilocation and autom atical'ly operatedt I Anotherobj ect 'ofthe 'invention' in. the provision of a mechanism of this n class'whereby the flow of material' through. the pressure line may be shut 'o'fi automaticallyand thedine'extending beyond the control drained-' a V Another-object ofthe invention is the' progo vision of a control which will serve'to shut off the flo'Wof material through the pressureline and simultaneously open the drain: 1;

Another object of the invention is thepro.- visi'on ofa device of thismlass which willbe simple in structure, economical of manufae ture andhighly efiici'ent in use; i

Other objects will I appear hereinafter; The invention consists in 'the 'coinbination and arrangement-2 of" parts i hereinafter de "scribed'and claimed; 1 I I The invention will-be-best understood a reference 7 to the accompanying drawin U which formsa part of thisspecifie'ation and 1 I which" is normally held by the spring 26flin 'pos'ition to engage-the lever=14. An'arma27 -85 in whic'h,"

Fig." 1 is a side elevati'ona'l' vie ventio'n. p I V I F ig2 is a: side'elevationalview ofthe in vention from the oppo'sitelside. x j Fig. 3'is a sectional view taken on'lirie wof the in- .ofFig 2. 4. anenlarged onlineA-i of Fig, 2. a

Fig. 5 is an enlarged. sectional View taken .pn line-5+5 of Fig. 2. f Fig.1 6 is an enlarged sectional on-line 6 6of-Fig.-l;. I A w The mechanism may enclosed I in a suitable-housing and comprises a base Yproject- V ,i-ng upwardlvfrom fwhich arestandardsefi sectional view taken view taken mally retai na: pressurand i9. The pressure line-10; is projected 5 through .the valve: ll'which may be of any suitable-type and a particularly of the gate type; The extension 120 of the pressure-line connects with the drain pipe l2' whi'ch extends r through-the control V3.1V81311J1ldi8 prDVldQCl withtheextension 12 ;whichserves-to lead the drain toany desirable point; Rdckably mountedon the-standard 9 isanoperating lever 14:, The-valve stem --l5 of the valve 11 is 'pivotally connected to the link 16" which is bifurcated at its upper end-and; embraces thelever gll, this bifurcated portion having bolt 17- projected; therethrough for engaging in a notch 18 formed inthe upper edge of the lever 14:: A spring 19 -embraces the link 16 and engages at -one end-the undersurface of the-lever-l4 and at-the opposite end the outwardly projecting lugs 20 formed on the lower" endof thealink116.--; Atpringqg 21 serves normally; to maintain -gthe lever rocked to the-position shownzin dotted lines in Fig. 1 which is fthe-positionin Whldh the valve 11 wouldbe-retained 'closed.- =The valve stem 22 of the valve '13 is similarly connected .to the lever-ll' by the link-23 which is provided with-the lugs24; and which'is embraced by the' spring 25. These springs embracing thelinksserve'asshock absorber-sin the op erationof' the device and also serve to nor- 3 e on the val've 11 maintaining'it closed.

Mounted on the; standard" 8 ;is a latch 26 from which thestandard'eeenkwhieh is pivotally mounted intermediate its ends the bar 30," pivotally connected; at one and the" link-"31 to; the arms 32 1 and '33 intermediate their ends, The arm 32 is provided with the laterally turned'end- 3'4adaptedftorlie in the 595 pathgof he engaged thefle v'er l lwhen it is rockedto position for closing the valve "11. The arm 33 islaterally ofi s'e'tol twardlyfrom; the arm 32and provided with thedownward-1y projecting end 35 positioned o've j 'anfd 1;;

adapted to engage upon rocking downward the latch arm 27. A spring (although a weight may be used) 36 connects at one end I tothe arms 32 and 33 and at the opposite end to the post 37 which is mounted in the base '1 and serves normally to move the arms 32and 33 downwardly sothat' the-end may e'ng'agethe latch arm 27 and rock itinto position to release the lever 14 for rocking movement to open the valve 13 and close the When the arms 32 and 33 are valvezll. roced downwardly, it is necessary that the bar 30 be rocked also. Rockably mounted on a lug 28 isa latch 39 which is adapted to engage the end of the bar'30 and prevent its rocking so that the latch thus servesto prevent a rocking of the arms '32 and 33 in response to the pressure of the spring'36 or weight. Sup-- orted on the standard 9 is an electromagnetic coil 40 extending across the cores of which i is the pivotally-mounted arm 41 having the ducting metal.

angularly turned end 42 provided with the shoe 491 (see Fig. 6) adapted to engage the contact carriedon the insulating plate 51 which is mounted on the lever 14. Projecting outwardly from the-post 47 is an arm 52 connected to which is one end of a spring 53, the other end connecting to'the arm '48 and serving normally to maintain the arm 48 rocked downwardly. The contact 50 is connected by the wire 54 to the magnetic coil.

The contact shoe-49 is connected by-the wire 54 to a source-of electrical energy (not 7 shown). The arrangement is'such thatwhen thelever 14 is rocked to theposition to retain the valve 11 in open position, the contact shoe 49 will be in engagement with the con- -tact50.. The electromagnetic coil is connectedby the wire 55 through a suitablether mostat (not shown) to a source of electrical energy, I T In operation, when the lever 14 is rocked to the POSliBlOll shown in full lines in Fig. ll,the drain valve 13 will be closed and the valve 11 will be opened, thus permitting the passa ge of. the material through the pressure line. lVhen the temperature .at the location of the thermostat reaches a predetermined point, the circuit to the electro-magne'tic coil 40 will be closed. This will causea'rocking .1 ofthearm 41 soas to rock the latch 39 and "permit thespr'ing' 36";or weight to'rock the arms 32 and 33. The arm 33'will effect/a 38 projecting upwardly from the chair release of the latch 26, thus permitting the lever 14 to rock into a position to close the valve 11 and open the valve 13. It will be noted that when the valve 13 is opened and the valve 11 closed that the shoe 49 does not engage the contact 50 so that the current passing through the electro-magnetic coil is, of very short'duration. V Itis believed evident that by attaching to .the. lever 14 thelnecessary contacts an electric pump could be set into operation at V the same time that the drain control valve is i opened, thus effecting a forced draining of the pressure line extending beyond the pressure line control valve 11. i

In this. way, there isfprovided a device which will automaticallyi control the opera tion of one or more valves. The device-"1s especially adapted for mounting in homes to control. the flow of. water through the water pipes in the winter so that a freezing and bursting ofthepipes will be prevented. It is believed obvious that the device'described may be. coupled to anyanumber of valves or similarcontrols and need not be limited to a single pair. V 1 V While I have illustrated and described the preferred form of my invention, Ido not wish to limit myself to the precise details of structure shown but desire to, avail myself of such variations and modifications as come within the scope of the appended claims. a 1

Having thus described my invention, what I claim asnew and desire to secureby Letters Patent is:

scribed adapted for use with a. pressure line, comprising: a valve interposedin said pressure line for controlling flowof, fluid therethrough; a drain connected to saidpressure; line; a valvepositioned in said'drain for controlling flow of fluid therethrough; a

1., A pressure line control of the. class derockable ,member pivoted intermediate-its ends and connected atoppOsitesides of its point of pivot to said pressure line valve and i to saiddrain control valve and adaptedupon rocking in one direction for moving one of said valvesto closed positionand the other valve to open position, and upon rocking in the opposite directionfor moving said valves to opposite positions; resilient means for nor- ,mally rocking said rockable member to posi- 7 tion for closin the valve in said pressureline and opening t e valve in said drain; a latch for latching sald rockable member 'in posi- 1 0' tion to maintain the valve in said pressure line in open position;-andfelectrically operated means adapted upon closing of'a' circuit a 1 2. A pressure line controlofthe class described adapted foruselwith' a pressure line,

thereto for releasing said latching means, j a

comprising: a valve interposed in said pressure line for controlling flow .of' fluid therethrough'; a drain, connected to said; oressurev line; a valve positioned insaid'd'rain for con-.

trolling flow of fluid therethrough; a rockable member pivoted intermediate its ends and connected at opposite sides of its point of pivot to said pressure line valve and to said drain control valve and adapted upon rocking in one direction for moving one of said valves to closed position and the other valve to open position, and upon rocking in the opposite direction for moving said valves to opposite positions; resilient means for normally rock- I ing said rockable member to position for closing the valve in said pressure line and opening the valve in said drain; a latch for latching said rockable member in position to maintain the valve in said pressure line in open position; a pivotally mounted arm controlled by an electrically operated means adapted upon closing of a circuit thereto for releasing said arm; resilient means for moving said arm for releasing said latch, and means for breaking the circuit to said latch releasing means upon release of said latch. V v

In testimony whereof I have signed the foregoing specification:

ROMEO swoon. 

